Specification Brand : Deeoee BulletPoint : 3mmx5mm CNC Motor Helical Shaft Coupler Beam Coupling Connect ExternallyAssignedProductIdentifier : 4783201183333 ItemName : 3mmx5mm CNC Motor Helical Shaft Coupler Beam Coupling Connect ItemTypeKeyword : beam-couplings Manufacturer : Deeoee Material : Aluminum PartNumber : DeeMixelec_20477 ProductDescription : 3mmx5mm CNC Motor Helical Shaft Coupler Beam Coupling Connect Absorption of parallel, angular misalignments and shaft end-play by spring action. Widely used in drive systems for encoders, instrumentation, lead screws, small pumps, feed rollers and anywhere a light to medium duty, torsionally flexible coupling is required. Absorption of parallel, angular misalignments and shaft end-play by spring action. Widely used in drive systems for encoders, instrumentation, lead screws, small pumps, feed rollers and anywhere a light to medium duty, torsionally flexible coupling is required. Product Name : Motor Shaft Coupler; Features : Screw Type(Coiling Clamping) Shaft Usage : 3mm to 5mm Length : 16mm / 0.63" Diameter : 20mm / 0.79"; Material : Aluminum Alloy; Color : Silver Tone Weight : 6g; Package Content : 1 x Motor Shaft Coupler Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.