Completely useless to me. This particular block is also advertised (on other sites) for use as a hitch stand. The center hole is too small for the trailer jack. Now agree that you can use it to lock a wheel, but it's expensive for this use and I don't see the point in using both sides. If you have a trailer with two axles, the distance between the two wheels will be larger. To lock a wheel, I recommend the Camco 44414 wheel chock - a 2-pack for about $9 a pair.
Bit and socket set Stels Tool set, 1/2", 1/4", CrV, plastic case 94 pcs, Stels, 94 pcs, black
46 Review
Xiaomi Mijia Ratchet Screwdriver 16 in 1 Screwdriver with Interchangeable Bits, 10 pcs, Black
22 Review
Rechargeable screwdriver OA-3,6F (433.0.2.00), 3.6 V, 1.3 Ah Li-ion, blister
46 Review
Cordiant Winter Drive 2 255/55 R18 109T
33 Review