If you want to buy a bottle wrench for your house water purify.You can given this practical bottle wrench.This item was made of safe materials so that it is light enough to be carried anywhere.Creative angel design makes more easy for a opening a water purify.It is suit to be used in house and office. Features -Color:Black -Material:Plastic -Size:26.00X12.50X1.30cm/10.22X4.91X0.51in(wrench) -Size:11.20X11.20X1.00cm/4.40X4.40X0.39in(Inside diameter of wrench) -The wrench slides onto the filter housing to help replace the filter element for easy use. - Made of environmental protection material,which is good for the environment. - Suitable for all standard water filter enclosures. Stronger membrane cup design prevents cracking. - Excellent workmanship, give maximum attention to every detail to give it a stylish and appealing look. - Mini and portable,it is convenience for you taking this bottle wrench anytime. Package list: 5 x Wrenches