A strong shroud that will be the perfect replacement for Pronto M51, M61, M71 with Sure Step power chairs. Trust that this new part will be exactly what you need; satisfaction guaranteed! Got questions? Call (401) 294-4111. PRODUCT DESCRIPTION. You're looking at a replacement shroud for Invacare Pronto M51, M61, M71. If you need to replace your old or broken shroud, this should be the perfect solution for you. Invacare Pronto M51 Manuals & User Guides. User Manuals, Guides and Specifications for your Invacare Pronto M51 Wheelchair. Database contains 7 Invacare Pronto M51 Manuals (available for free online viewing or downloading in PDF): Parts catalog, Specifications, Owner's manual, Owner's operator and maintenance manual, Service manual . This battery charger works for: Invacare Pronto M41 with SureStep. If this is not your device model, click this link below to find out the correct charger you need.We have replacement chargers for almost all Invacare Power Wheelchairs & Mobility Scooters.