Measurements: 19,7 cm in length (12 cm x 7,7 cm) and about 3 mm thick. The strap width at the buckle is 2 mm less than the spring bar width. If you want to change the buckle, choose a buckle that is 2 mm narrower than the lug size (16 mm buckle for 18 mm straps, 18 mm buckle for 20 mm straps, and 20 mm buckle for 22 mm straps).