uxcell M8 x 30mm Thread 32mm Star Head Dia Screw On Type Clamping Knob 6 Pcs Product Name : Clamping Screw Knob;Type : Screw On;Head Diameter : 32mm / 1.26" Thread Length : 30mm /1.18&ldquo;;Thread Diameter : 8mm / 0.3" Total Height : 45mm /1.7";Material : Metal, Plastic Color : Color;Gray, Black : Gray, Black Weight : 115g;Package Content : 6 x Clamping Screw Knob