As an Amazon Associate, we earn from qualifying purchases. Cat40 end mill holder 5/16? x 4.00? Sowa Tools . 522-026 Attributes Brand name, Manufacturer name, ManufacturerSowa Tools Attribute001.26? Attribute015/16-24 set screw Attribute02Certified balanced to 30,000 rpm Attribute037.95 Attribute040.313 Attribute05Yes AttributeKey00tool hole depth AttributeKey01set screw AttributeKey02balance AttributeKey03bore diameter mm AttributeKey04bore diameter inch AttributeKey05coolant InStockStringTrue Extra Product NameCat40 end mill holder 5/16? x 4.00? moq, multiple, tierMinQty11 MPN, SKU522-026 qtyInStock-2 qtySourceInStockString tierPrice1161.38 Distributor offers SellerSKUMOQIn stockMultiplePrices tmttoolbox.com522-0261-211 @ $161.38