QCH Series QCH Milling blanks Carbide blank Exchangable head QCH 20 mm K40 Carbide Blank QCH Watch this product and we will notify you once it is back in stock. The product is now watched We will notify you once the product is back in stock again. E-mail Watch this product Your personal information is processed in accordance with our privacy policy. Carbide blank Exchangable head QCH 20 mm K40 Carbide Blank QCH Reviews Product review Based on 0 ratings. Click on a star to rate 1 star 2 stars 3 stars 4 stars 5 stars You Click on a star to rate Retrieve your Facebook profile. Be the first to leave a review.