# Structure Brackets Structure brackets are designed to secure pieces of structure together at varying angles. There are different hole patterns available to accommodate the different extrusion types and patterns. In the REV ION Build System, structure brackets are any bracket that does not have a MAXSpline Bore. ## 1in Corner Brackets

**1in Inside Corner Bracket** ([REV-21-1203](https://www.revrobotics.com/rev-21-1203/)) is designed to enable more construction strategies with the REV 1in Extrusion. Designed for #10 hardware, the mounting holes are on a 1in pitch that allows for the creation of complex joints by stacking with other REV 1" Brackets. **1in Basic Corner Bracket** (REV-21-3293) is a compact, low-profile solution for strengthening MAXTube joints or adding simple mounting points where space is limited. Each 2in leg includes three #10 clearance holes on a 1/2in pitch, and the clearance holes in the radiused bend offer screw head clearance. The 1in width aligns cleanly with 1x1 MAXTube and integrates seamlessly into the REV ION System. **1in Angled Corner Bracket** (REV-21-3291) is a compact, heavy duty solution for reinforcing MAXTube joints and building rigid structures in tight spaces. Its 5mm thick aluminum body provides consistent strength, while the integrated angle dramatically boosts joint stiffness by resisting torsion and bending loads. Each end of the bracket includes two #10 clearance holes on a 1/2in pitch, giving teams flexible mounting options for corner reinforcement or general structure assembly. At only 1in wide, it nests cleanly alongside 1x1 MAXTube and fits easily into dense robot designs. ### Corner Bracket Specifications


Product	Material	Length	Width	Height	Weight
1in Inside Corner Bracket	6063 T5 Hardened Aluminum, Clear Anodized	50.8mm (2in)	25.4mm (1in)	50.8mm (2in)	40.82g (.09lb)
1in Basic Corner Bracket	6061 Aluminum, Black Anodized	50.8mm (2in)	25.4mm (1in)	50.8mm (2in)	32g (0.071lb)
1in Angled Corner Bracket	6061 Aluminum, Black Anodized	57.2mm (2.25in)	25.4mm (1in)	57.2mm (2.25in)	31g (0.068lb)

## **1in Brackets**

### 3-4-5 Brackets Create a sturdy triangle with our 3-4-5 Brackets to support your robot. When using 3-4-5 Brackets any 3 lengths of tube that make a 3-4-5 triangle will allow the holes to line up with the brackets and for the holes to stay on pitch relative to one another.

The 3-4-5 Brackets come in both external and internal versions. Both brackets form the same structure of a 3-4-5 triangle; it is just secured in different places. ![3-4-5 External](https://2800450911-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4vnkeyE3Rv32OmveFas2%2Fuploads%2FKXMeA20kJm7peOUxX52J%2F345external.png?alt=media\&token=0e596d47-a1f4-4b17-9073-a7d289dd5ee8) ![3-4-5 Internal](https://2800450911-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4vnkeyE3Rv32OmveFas2%2Fuploads%2FZn3tVmqRum0BLct3Ojr9%2F345internal.png?alt=media\&token=05d65b6d-c605-4058-a642-863e33361d83)

{% hint style="info" %} Use External 3-4-5 Brackets for creating a 3-4-5 triangle with 2x1in MAXTube that features the MAXPattern or the Grid Pattern {% endhint %} ### Full Structural Brackets List and Weights **1in Brackets**[ (Product Family Page) ](https://www.revrobotics.com/1in-brackets/)This is an assortment of Brackets that are all 1in wide and feature #10 clearance holes on a 1/2in pitch. Using these brackets with any of our MAXTube or Extrusion allows for easy construction of robot frames, mechanisms, and structure. | Bracket Name | Weight | Image | | -------------------------------------- | -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | 1in Bracket - 30deg V1 | 30g (0.066lb) |