uxcell M10x30mm Thread Star Shape Head Clamping Screw Knob Grip Black 2pcs Product Name: Clamping Knob; Type: Screw On Total Height: 62mm/2.4"; Material: Plastic,Metal Color: Black,Silver Tone; Net Weight: 115g Package Content: 2 x Clamping Knob; Head Size: 60 x 32mm/2.4" x 1.26"(D*H) Thread Size: M10 x 30mm/0.4" x 1.2"(D*L)