Simpeak Compatible for Apple Watch Band 42mm 44mm, Adjustment Stainless Steel Band for 42mm iWatch Series 4 3 2 1, with Tool and 2pcs Links, Silver for Men 5 years warranty and free lifetime technical support globally, just email to seller any time to get the after-sale service match tool to adjust the band size, if you have problems to use the tool, please check the video or get help from seller before you bent the tool pins only fit for 42mm apple watch (if you have the 38mm apple watch series 123, please search the 38mm stainless steel band from our store) made of premium 316L stainless steel material, more wear and corrosion-resisting, no allergy, but avoid friction when do the outdoor work this band is 24mm wide and around 100gram weight, it's not fit for too small wrist (it's little heavy and wide for little girl) - if you have a big wirst, you can choose the large size, it match 2 more links inside)