Tandy Leather Craftool� Celtic 4-pc. Stamp Set 69015-00 Instantly add a unique Celtic design or border to your leather projects. Set included four different impressions to help you create a variety of designs. Simply connect the stamps, it's that easy. Short straight approx. 3/16x5/16, long straight approx. 3/16x5/8, corner 3/16x 7/16 and curve 3/16x3/4.