T55 TORX BIT BTX55BA | eBaydiy Tools

Austempering for improved product performance and a longer service life
Surface peening for greater durability
Lock-ring retention
Manufactured using a special heat-treatment process called austempering which greatly improves the products performance and service life by providing additional ductility and strength
Further enhancements during manufacturing include a special shot-blast process which relieves internal stress in the finished product for greater durability
Tri-Lobular Bit Retention – patented method of holding bit in holder, keeps the bit secure without movement