Both professionals and hobbiest, rejoice! The Excel Blades’ Excel Blades Weeding Hook Replacement Tips – 2 Pack is set to become your next favorite tool! This retractable weeding penhas a diameter of .030 in., and is a replacement tip for weeding pen 16050. The item # 30622 is made of aluminum.This products works in exclusively with Excel Blades’ scribe/weeding tool; 16051.It comes with 2 per pack.