15mm Plastic Motion Brackets are compatible with the REV DUO System. Each bracket features a set of alignment ribs designed to seat the bracket into the extrusion channel increasing joint alignment, strength, and rigidity. The 15mm Plastic Motion Bracket (REV-41-1303), 15mm Plastic Rod End Bracket (REV-41-1304), and 15mm Gearbox Motion Bracket (REV-41-1315) can be used with REV DUO Plastic Bearings to support a shaft. The 15mm Plastic Indexable Motion Bracket (REV-41-1313) is used to create an adjustable shaft support. Both pieces have a sawtooth pattern which fit together and can be adjusted in 1mm increments. The larger bracket in this set has a 9mm center hole surrounded by a ring of six M3 clearance holes to use with REV DUO Plastic Bearings to support a shaft. The 15mm Plastic Servo Bracket (REV-41-1319) fits the REV Smart Robot Servo (REV-41-1097) as well as most other similar form factor servos. Specifications 15mm Plastic Motion Bracket Material: Nylon (PA66) Thickness: 3mm Hole Diameter: M3 clearance Hole Grid Spacing: 8mm 15mm Plastic Rod End Bracket Material: Nylon (PA66) Thickness: 3mm Hole Diameter: M3 clearance Hole Grid Spacing: 8mm 15mm Plastic Indexable Motion Bracket Material: Nylon (PA66) Bolt Area Thickness: 3mm Adjustability: 1mm Hole Diameter: M3 clearance 15mm Plastic Servo Bracket Material: Nylon (PA66) Bolt Area Thickness: 3mm Hole Diameter: M3 clearance Hole Grid Spacing: 8mm Documentation Building System Guide Product Options SKU PRODUCT NAME CAD & DRAWINGS REV-41-1303-PK8 15mm Plastic Motion Bracket - 8 Pack STEP FILE ONSHAPE DRAWING REV-41-1304-PK8 15mm Plastic Rod End Bracket - 8 Pack STEP FILE ONSHAPE DRAWING REV-41-1313-PK4 15mm Plastic Indexable Motion Bracket - 4 Pack STEP FILE ONSHAPE DRAWING REV-41-1315-PK4 15mm Gearbox Motion Bracket - 4 Pack STEP FILE ONSHAPE DRAWING REV-41-1319-PK2 15mm Plastic Servo Bracket - 2 Pack STEP FILE ONSHAPE DRAWING