Fix-it-Stick isn't making the drive limiter. You are only going to be able to get kits based on Sloky ratings. They come in common Nm ranges to match Metric Torque specs.
You can get pretty close with these: 2.5 Nm, 3.8 Nm, 6.0Nm (22.1 In-lb, 33.6 In-lb, 53.1 In-lb)
I can not say enough good thing about this style torque limiter.