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 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 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 Package Including: the package includes 16 pieces of can openers in 2 styles, , abundant quantity and styles can meet your daily using needs Colour:silver Material:Stainless steel Package Contents: 12 x 38MM can opener 4 x 51MM can opener Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.