The item for sale is a brand new aftermarket replacement strap made of the top grade premium calf genuine leather for Cartier Tank or Ronde Solo watch in black color and it comes with butterfly deployment clasp in 18mm,19mm, 20mm, 22mm, 24mm and 26mm and you can select the size you need.This Strap is made of Premium grade Italian genuine leather with thread stitching and comes with thick 4.5mm padding with soft beige nubuck genuine waterproof leather lining on the back with sweat resistance for long lasting and durability with comfort, nice, classy and expensive look like your original strap. This Leather Strap is Waterproof and great for swimming and it getting wet.It will fit up to an 8-8 1/2 inch wrist with the 1 1/2 inch watch.Buckle is interchangeable and is made of 316L stainless steel. Thickness: At Lugs: 4.5mmAt Buckle: 2.5mm Length:Long part: 115mmShort part: 75mmIt comes with your choice of Black, White and Orange thread stitching.You get one set (2) complete leather straps with Stainless Steel buckle and it comes with 2 free spring bars.This Strap is made of Top Grade genuine Calf leather and is specially made for high end watches and sells for $150 and up in stores.All Customers Please Read The Following Before Purchasing:Be sure to check our detailed measurement guide below or in the photos/images section of the listing to assist you with purchasing the correct parts for your watch. The guide will show you how to measure the lug width opening of your watch using a ruler, how to check your model number, and assist you with other questions you may have regarding measurement. Many watches appear the same but may be different in case size or year model. This will help to avoid any returns or exchanges. We are also an email away to assist with any questions you may have. Thank you for your business!