Simson standard The Simson standard Fixed wide is an adjustable aluminum standard with a normal wide plate attachment (30 mm). Can be sawn to any desired wheel size using the engraved size index on the back. Very suitable for city bikes and hybrid bikes up to 28 inches. Saw the standard to the desired size with a metal saw and mount the standard to the bike using an Allen key and the supplied Allen bolt. Specifications: Color: silver Material: aluminum Wheel size: 28 inches Mounting plate width: 30 mm Weight: 25 grams Dimensions: 5 x 8 x 41 cm (L x W x H)