4 Pcs Valve Lapper Cutting Paste Hand Lapping Tool Valve Hand Lapping Grinding Tool Kit-Yellow+Black & Blue + Black

EASY TO USE:Clean all carbon deposits off valve and wipe down each valve install valve in valve guide press correct size suction cup firmly onto of valve and lightly spin tool handle between palms of your hand (as if trying to start a fire) until a suitable is obtained; We recommend placing valve lapping/grinding compound (not included) on valve seat or valve (keep compound off the top of the valve to proper suction) blue + black Valve Lapper: Sizes: 15mm - 19/32 inch 20mm - 25/32 inch 25mm - 31/32 inch 30mm - 13/16 inch Length - 225mm Place valve lapping compound on valve seat or valve as directed by compound instructions. Install valve in to valve guide. Press correct size suction cup firmly on to off valve. Spin valve lapper tool handle between palms of the hand until a suitable is obtained Color:yellow+black & blue + black Material:plastic+wood & plastic Package Contents: 4 x valve grinder Only the above package content other products are not included. Note: Light 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.