The Fitness-Mad Mat Racks for Core Fitness Eyelet Mats are now available at McSport. Ideal for home and commercial use. Designed to hold mats with eyelets with a hole diameter greater than 2cm. The bars can be adjusted from 36cm to 51cm apart (centre to centre) and are suitable formats with eyelets of 1.95cm or larger. The bars that secure the mats are 21 cm long and on a suitable wall can hold up to 15 x 10mm mats or 10 x 15mm mats. Mat Rack for Core Fitness Eyelet Mat. Hold mats with 2cm eyelets or larger. Can hold up to 15 x 10mm mats. 10 x 15mm mats on a secure wall. 21cm long bars. Adjustable from 36 cm to 51cm apart (centre to centre).