Description Actobotics Set Screw Shaft Coupler Bore: 0.125" to 5 mm Made of Stainless Steel The Actobotics Set Screw Shaft Coupler (1/8-Inch to 5mm) is made of stainless steel and has a bore 0.125 inch to 5 mm. View more What's Included 1 x Actobotics Set Screw Shaft Coupler (1/8-Inch to 5mm) Dimensions Specifications Bore: 0.125 inch to 5mm Material: Stainless Steel Weight: 0.38 oz (11g)