• Combine a lapping compound (not included) to lap valves to match valve seats
• Suction cups are strong enough for repeated use
• This set is durable and comfortable in any garage or tough worksite
• 4pcs suction cups extra make this set more cost-effective.
• 9" tool with 1-1/8" and 1-3/8" cups. 8" tool with 5/8" and 13/16" cups.