CenterZ 6pcs Stripped Screw Extractor/Damaged Bolt Remover Set - Ideal Left Hand Spiral Removal Tool Kit with Storage Case for 1/8 to 1 inch Thread Broken Stud, Screw, Bolt, Small Pipe Easy Back Out

#6 Largest sizes is not 3/4 to 1". The outer dimension (OD) ranges from (approx) 0.40" to 0.60"#5 OD is (approx) 0.30" to 0.40"#4 OD is (approx) 0.20" to 0.30"#3 OD is (approx) 0.18" to 0.25"#2 OD is (approx) 0.15" to 0.17"#1 OD is (approx) 0.09" to 0.15"

I got this to extract stripped bolts from my bicycle and the very first one, the bit stripped and rounded itself off smooth. disappointing.