Deluxe Diamond Scribing Pen

High-quality precision diamond scribing tool in a durable chromium pen housing. Screw-type precision mechanism works smoothly and diamond mounting (quality industrial diamond tip) is firmly affixed when exposed; no wobble. Twist-type barrel exposes or retracts diamond tip. Refills available. Diamond is ground and lapped to a 60° included angle. Overall length is 133mm, weight is 26 grams.