For hand lapping engine valves. Neoprene rubber cups are resistant to oil, gasoline and grease. Set contains 5/8" and 13/16" (16 and 21mm) and 1.1/8" & 1.3/8" (28 and 35mm) double end valve lapping tools.

Available Separately:

Item No. Description Cup Sizes Length
4311 Vacuum Cup Valve Lapper 5/8" & 13/16"(16 & 21mm) 9"(228mm)
4313 Vacuum Cup Valve Lapper 1.1/8" & 1.3/8"(28 & 35mm) 9"(228mm)
Barcode # 9322159943122