... , W6R, W6HR, W6ER, W6EHR, W6SR, W6SGR, W7ER, W7EHR, W8EHR, W1-10R, W1-13R, W1-15R We can customize products for you ... retention and helps to reduce the bore of toolholder wear.6. Extractor groove in head part for easy extraction. Production Capability ... ♦ AssemblingIn-House Tooling Shop ♦ Forging die ♦ Machining fixture ♦ Gauge W1-10R Long Service Life Road Milling Bits