- T6 T6T6

t6slotSections of MicroRax, MakerBeam, OpenBeam and V-Slot . As show above, these 4 type range from 10mm to 20mm square profile. Each profile has its unique features, but all share the T slot function.Choose from our selection of aluminum T slots, including T-slotted framing rails, T-slotted framing structural brackets, and more. Same and Next Day Delivery.