QEP Scoring Knife Carbide Tip Black & Yellow SKU: 446870 MODEL: 10015 Error. try again later You've successfully joined the club $ 22 .47 each Available on orders $50 to $1500. More info × Mitre 10 MAvailable at Mitre 10 MEGA stores. Variants Makes accurate cuts in cement backer boards for most types of installations. Protective knuckle guard. Features and benefits Carbide scoring tip. Scores cement backerboard and vinyl tiles. Second blade concealed in handle.