This product prevents chain drops on road, gravel, and CX bikes with 1x drivetrains. Tested in collaboration with Team Jumbo-Visma. Similar to GnarWolf, this product has a head that only covers the top and inside of the chain. Guidelock quick adjustment system allows up to 8mm of chainline adjustment without the use of shims. The sweep (horizontal angle with the chainring) varies by frame, but Low Sweep should suit most needs. The Low Sweep base has three vertical bolt positions, but the mid and high sweep do not require as much vertical adjustment. Compatible with bikes with blaze-on front derailleur mounts. Available for 1x drivetrain only. Compatible with round or oval chainrings. Weight: 39-43g