With 4 reinforced cups and insulating drill. Clean the cups and valves with lacquer thinner and off you go! I've seen bad reviews that it doesn't work. There are no instructions included so I've included a short video to show you how it works. This is mechanical lapping and requires more frequent performance checks. If you don't check progress more often, you may need new valves and seats! Overall I think the price is reasonable. I'm not sure if the internal mechanism is metal or plastic. It remains to be checked!
DPTOOL 6PCS Camshaft Phaser Timing Chain Tools for VW Chrysler Dodge 3.6L 10200A+10202 High Performance Engine Kit
9 Review
BETOOLL Camshaft Tensioning Alignment Chevrolet
9 Review
π§ GearWrench Universal Pulley Holder - Versatile 15-Inch Tool for Hassle-Free Repair
9 Review
πͺ Lisle 39000 Pulley Puller: The Ultimate Tool for Convenient Pulley Removal
9 Review
DVR 70MAI Dash Cam Pro Plus+, black (A500S), black
87 Review
Bit and socket set Stels Tool set, 1/2", 1/4", CrV, plastic case 94 pcs, Stels, 94 pcs, black
46 Review
Xiaomi Mi x Mijia Wiha Precision Screwdriver Set (DZN4000CN), 25 pcs
34 Review
Xiaomi Mijia Ratchet Screwdriver 16 in 1 Screwdriver with Interchangeable Bits, 10 pcs, Black
22 Review