Stainless Steel sideplates, two 2" Stainless Steel sheaves, Bearing, and Stainless Steel axle. 

MBS	Cable/Rope Capacity	Size	Weight	Efficiency
14,000 lbs	1/2"	6.25x9.25in	2.4lb	n/r

These are brand new from CMI, a very trusted name in cable trolleys. We have not fully beaten and battered this trolley yet, but i am sure we will this summer. It is massively strong and built with CMI's traditional trolley design with an extended overhead attachment for double cable runs. (double cables are usually required for cruise ship zip line tours). Otherwise single cables are usually appropriate.