ITEM NAME:10pcs M4 x 15 x 15mm Black Clamping Knobs Handle for Machinery Lathe H1F2 10pcs M4 x 15 x 15mm Black Clamping Knobs Handle for Machinery Lathe H1F2 Wonderful replacement for your broken one with this Knurled Knob. Screw on type design for easy install and with surface nice finish for comfortable grip. Product Name : Knurled Knob Type : Screw On Head Diameter : 15mm /0.6inch Male Thread Length : 15mm / 0.6inch Male Thread Diameter : M4 Total Length : 25mm/1inch Material : Metal ,Plastic Color : Silver Tone, Black Net Weight : 42g Package Content : 10 x Knurled Knobs 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 +/- 1-3cm.