👍 Work well on crazy horse leather, grain cow leather, vegetable tanned leather and oily leather, etc. It is NOT recommended to use on suede. 👍 Best used for vegetable tanned leather with a thickness of more than 1.5mm. 👍 It is recommended to wet the vegetable tanned leather slightly before stamping on the vegetable tanned leather, so the stamping effect is better. 🔨 IMPORTANT: Use the small wooden stick comes with this kit and hammer to tap and stamp lightly to avoid cracking the plastic mold with too much force. Breaking the space between letters with too much force will not affect the overall use. 👍 This set includes： ✔Capital letter mold x 1 ✔Lower letter mode x 1 ✔Wooden stick x 1