Tackform is a system rather than a set of separate products, and understanding that is what makes the catalogue easy to buy from. Everything connects through a 20mm metal ball and socket: a holder on one end, an arm in the middle, a base on the other. Change any one of the three and the rest still works. Tackform states it carries the industry's largest selection of 20mm metal ball and socket parts, and its arms and bases are all-metal rather than plastic.
The pieces fall into three groups. Holders: a standard phone holder, a magnetic phone holder, a MagSafe holder, a spring-loaded tablet holder, an action camera holder, a Midland radio mount and an 8-gang Auxbeam switch panel holder. Arms: DuraLock 20 Series arms in 2 inch and 3.5 inch lengths, some with anti-theft sockets that need a knob or tool to release, plus couplers and adapters that step a 20mm ball down to 17mm or up to a 25.4mm, 26mm or 38mm socket. Bases: the TRAXX slim and assault track bases, and 20mm track balls sold singly or in pairs.
The track balls are worth calling out for anyone already running a Cali Raised dash mount, because they are listed as Cali Raised compatible. That means you can keep the mount already in your truck and change only the holder - a MagSafe head instead of a clamp, or a tablet arm instead of a phone one - rather than starting the install over.