1/4" 2-14Nm Bike Torque Wrench 21pcs Bike Torque Wrench Set Socket Spanner with Impact Bit Bicycle Motorcycle Ratchet Repair Kit

If you want a reliable and affordable torque wrench, I recommend this one; otherwise, this digital one has been on my wish list for a while at least it lets you be more precise with your adjustments. A little tip I'd like to share, when you use it always make sure to extend the internal spring of the wrench (setting it to zero) so it isn't constantly under tension, which will help it last longer.