Hardened Stainless Steel Inserts Your original screws will fit again WORKS ON ALL HOLLEY FLOAT BOWL SCREWS We ship all orders in ONE business day. Made in the USA & Europe This kit will repair stripped threads on any of the four screws that hold the fuel (float) bowl on a Holley carburetor. It is a brand new, good quality kit that includes a tap, tap-drill, installation tool, and 12 stainless steel thread inserts. The tools are made in the USA, and the inserts are made in Europe. Every component in this kit is interchangeable with Helicoil products.