FULL WERK 40Cr PB-S16-8R-36-M5 OD 16mm ID 8mm Rotatable Universal Joint Coupling Shaft Connector Size:Outer Diameter:16mm Inner Diameter:8mm Thread Diameter:5mm Length:35.5mm Type:PB-S16-8R-36-M5 OEM quality & professional replacement part Shipping from Hangzhou China within 2 days after ordered Net weight:0.04kg