<b>Material</b> <br>65 Manganese Steel <br><br><b>Dimension</b> <br>Clamping Diameter: 1/4" & 1/8" <br>Total Size: 21 x 32mm / 0.83" x 1.26"(Max.D*H) <br><br><b>Package Content </b> <br>2pcs x Spring Collet <br><br><b>Please Note</b> <br>Collet must be placed into collet chuck nut before inserting into collet chuck. <br><br><b>✨ Our Promise ✨ </b> <br>Refund is guaranteed if the product you received has any quality problem. <br><br><b>✨ Welcome to Contact Us ✨ </b> <br>Your satisfation is our first priority. Rannb aims to provide our customers a happy shopping experience and completed After Sale Service. If you have any question to product, please feel free to contact us.