Core Drill Extension 300mm
https://diamondway.com.au/shop/318742-core-drill-extension-300mm-18498
https://diamondway.com.au/web/image/product.template/18498/image_1920?unique=1a1abce
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Core Drill Extensions. Quality drill extentions available in 200mm,300mm,400mm lengths ( 11/4" UNC) fitting. Adaptors also available to suit (1/2"BSP).