This 5-pack of collet bodies ensures proper tungsten electrode alignment in WP17/18 torches. The 1.6mm size is perfect for precision TIG welding on thin materials. Machined from high-quality brass for excellent conductivity and heat dissipation. The precision threads provide secure engagement with the torch head. The split design maintains consistent clamping force on the electrode. Compatible with all standard collets and back caps. Each body is individually inspected for dimensional accuracy. The 5-pack provides cost-effective replacement inventory for busy shops. Extends electrode life by maintaining perfect concentricity during welding.