Ordered from DP. The seller was very helpful and delivered quickly. The product itself is ok. Yes, I've been drinking Kool Aid and decided I need floating seat bolts (taper washer). This problem is that while the 16 non-locking bolts are in two pieces, the locking bolts are NOT. They are a solid (not a floating washer) construction. What's the point of advertising 2-components if they aren't 2-components? I think the fine print suggests the 'locks' are solid so be forewarned. The threaded portion (the shank below the cone) is 30.5mm long. --- This is 2-3mm larger than stock. The product is made in the USA, so that's a plus.