our p38 and p51 can opener have reasonable sizes, the openers have 2 sizes, . 5.1 x 1.8 x 1.5 cm/ 2 x 0.7 x 0.6 inches and 3.8 x 1.2 x 1.5 cm/ 1.5 x 0.5 x 0.6 inches; so please confirm size details before your purchasing Applicable occasions: these camping can opener tools are suitable for outdoor camping hunting and fishing trips, and you can take them with confidence because they are convenient and reusable Our simple human can opener is made of reliable stainless steel, which is , strong, compact and rust-free, so you can use them for a long time without worrying about them breaking Don't worry about losing: there is a hole in each portable can opener, so you can hang it on a key ring or chain, and it 't be lost easily when you are travelling or going camping as it's small Package Including: the package includes 16 pieces of can openers in 2 styles, , abundant quantity and styles can meet your daily using needs