This is what Ethicon has to say about the Echelon ECR60B Stapler Reloads: Echelon Endopath Staplers are sterile, single-patient-use instruments that deliver staples while simultaneously dividing tissue between rows The Echelon Staplers are offered with staple cartridge lengths of 60mm and come in long or compact shaft lengths. Echelon Endopath Staplers with gray, white, blue, gold, and green reloads deliver six staggered rows of staples with a single cut line in-between. A safety lock-out feature in the Ethicon reloads is designed to prevent a used reload from being re-fired. A staple retaining cap on the Echelon reload, protects the staple leg points during shipping and transportation. All Echelon Endopath Cartridges are compatible only within the Echelon Endopath Family of Staplers. Wide range of cartridges: Accommodates various tissue thicknesses, all with 6-row stapling capability. ECHELON FLEX uses a wide range of cartridges that provide 6-row capability and deliverconsistent, uniform staple formation according to tissue thickness. The cartridges can be used across the entire platform of Echelon ENDOPATH Stapler devices ECHELON 60mm reloads fit down 12mm trocar. Endoscopic Linear Cutter Reloads.