As an Amazon Associate, we earn from qualifying purchases. Bt40 end mill holder 3/16? x 4.00? Sowa Tools . 531-029 Attributes Brand name, Manufacturer name, ManufacturerSowa Tools Attribute00Certified balanced to 30,000 rpm Attribute010.75? Attribute023/16? Attribute03BT40 Attribute04101.60 Attribute054.000 Attribute06No Attribute07Yes AttributeKey00balanced AttributeKey01projection diameter AttributeKey02hole diameter AttributeKey03taper AttributeKey04gauge length mm AttributeKey05gauge length inch AttributeKey06dual contact AttributeKey07coolant InStockStringTrue Extra Product NameBt40 end mill holder 3/16? x 4.00? moq, multiple, tierMinQty11 MPN, SKU531-029 qtyInStock-2 qtySourceInStockString tierPrice1132.15 Distributor offers SellerSKUMOQIn stockMultiplePrices tmttoolbox.com531-0291-211 @ $132.15