From the ManufacturerSpecifications Fully adjustable in length from 10" to 15" (25.4cm - 38.1cm) Sold in sets of two Materials: Nylon webbing, leather tabs and metal clips Quick disconnects: Yes Webbing Width: 1/2" Made in the USA Compatible Cameras Cameras Version A Version B Bronica (ETR and some ETRC) X Hasselblad X Kiev X Mamiya (except M645 Super and M645 Pro) X Olympus IS1 and IS2 X Pentax 6X7 X Pentax 645 X Pentax LX X Rollei X These are registered trademarks of companies other than OP/TECH USA.This is only a partial list of the cameras which can use the SUPER PRO STRAP. InstructionsHow to Attach a SUPER PRO System Connector to Your CameraInsert the camera lug through the large hole in the clip which will force the spring clip upward. Slide the clip back which will lock the camera lug in place. The spring clip should close behind the camera lug. Move the retaining slide towards the clip. Lock the retaining slide firmly in place behind the spring clip so that both pieces become one unit.Product DescriptionWith the OP/TECH USA system connectors, The camera/binocular owner has several connection options. You can buy an extra set of connectors to customize the strap to best suit your needs. Straps can be lengthened to be worn across the chest or shortened to be worn at chest level. Another feature of the system connectors is the small carrying handle created when the quick disconnects are latched together.