- Manufacturer
- ARP Fasteners
- MPN
- Not provided
- UPC
- 6.72036E+11
- Our Part Number
- ARP912-0004
S sizes: 1/4?, 5/16?, 3/8?, 7/16? and 1/2?, as well as metric. They are sold individually or in sets. Please note that these are strictly cleaning taps and are not designed to cut thread. They are a handy addition to the tool box of any serious engine builder and an essential aid to preparing any block for final assembly. Don't take a chance on weakening block and cylinder head threads. Use these handy thread cleaning chasers whenever possible!