MICRO-Speeder double ended ring spanners with straight, slender and extra long design. Ideal for inserting into tight spaces. When things get really tight, the MICRO-Speeder is a superior piece of kit. Often used on automatic transmissions for removing engines, on rear axles or for production work - mechanics habitually carry the 10 x 13mm and 17 x 19 sizes with them. Designed for professional use with a 2 year guarantee.