It is available for two different sized unistrut channels. You can get the Sirius Professional 17mm 1/2 Drive Socket for 41mm Unistrut Channel or the Sirius Professional 17mm 1/2 Drive Socket for 21mm Unistrut Channel.
eBay
4x 1/2 Inch Drive Wheel Protector Impact Socket Thin Wall Deep Impact Socket Set Plastic Sleeve Lug Nut 17mm, 19mm, 21mm, 22mm
Aliexpress UK
used works fine.
eBay
4Pcs 1/2" Drive 6 POINT WHEEL NUT SOCKET Alloy Wheel Nut Thin Wall Deep Impact Socket Set 17MM - 19MM - 21MM - 22MM
Aliexpress UK
Includes Vorteck 100mm 3/8"" square to E6.3 Hex adapter. Optimised for 21mm slotted channel using 17 and 19mm bolts. Unique C.K designed channel socket with 3/8" drive.
eBay
T-shaped Hand Tool Hex Socket Wrench 7mm 8mm 9mm 10mm 12mm 13mm 15mm 17mm Metric T-handle Wrench Extended T-Socket Wrench
Aliexpress UK
Specifically designed socket for use with Unistrut type channel. Total length of the socket 72mm so deep enough to accommodate the stud length. • Total length – 72mm. Restricted access socket for strut channel fixings.
eBay
17mm 19mm 21mm Hex Sockets Colorful Sleeve Tire Protection Sleeve Wall-Deep Impact Nut Socket Alloy Wheel Pneumatic Wrench Tire
Aliexpress UK
The product is a set of channel sockets with sizes 17mm and 19mm, manufactured by Shenfeild England. These sockets are designed specifically for practitioners in the field of automotive maintenance and repair. Made by a reputable brand known for producing high-quality automotive tools, these sockets are reliable and durable, ensuring a secure grip on nuts and bolts during tightening and loosening operations. Perfect for professionals and enthusiasts alike, these channel sockets are a essential addition to any toolbox.
eBay
1/2 Inch Drive Wheel Protector Impact Socket Thin Wall Deep Impact Socket Set Plastic Sleeve Lug Nut 17mm, 19mm, 21mm, 22mm
Aliexpress UK
Its precise design and features ensure efficiency and ease of use in various applications, especially in installations involving 41mm standard channels. This tool is indispensable for contractors working on projects involving M10 stud rods and channels.
eBay
3/4" Inch CR-MO Impact Socket Heavy Duty 17mm 18mm 19mm 21mm 22mm 24mm 27mm 30mm 35mm 38mm 41mm 46mm Hex Black Air Sockets
Aliexpress UK
17mm Thin Wall Deep Socket For Channel 1/2" Drive Thin Unistrut Reach Socket 1. Condition is New. Dispatched with eBay Delivery – Evri, Yodel & DPD.
eBay
17mm /19/ 21mm Hex Sockets Colorful Sleeve Tire Protection Sleeve Wall-Deep Impact Nut Socket Alloy Wheel Pneumatic Wrench Tire
Aliexpress UK
17mm Thin Wall Deep Socket For Channel 1/2" Drive Thin Unistrut Reach Socket 1. Condition is New. Dispatched with eBay Delivery – Evri, Yodel & DPD.
eBay
1/2 Inch Drive Wheel Protector Impact Socket, Thin Wall Deep Impact Socket Set Plastic Sleeve Lug Nut 17mm, 19mm, 21mm, 22mm
Aliexpress UK