Comparison : Item # 2300ST NP (1" x 4.5mm), 1 Inch (in) Inside Width (A) Nickel Plated Finish Special Heavy Slide
Item # 2300ST (1") 7.7mm, 1 Inch (in) Inside Width (A) Special Heavy Slide
Item # 2300ST (1" x 4.5mm) NP, 1 Inch (in) Inside Width (A) Nickel Plated Finish Special Heavy Slide
Item # 2300ST NP (1-1/2" x .11"), 1-1/2 Inch (in) Inside Width (A) Nickel Plated Finish Special Heavy Slide
Item # 2300ST (3") NP, 3 Inch (in) Inside Width (A) Nickel Plated Finish Special Heavy Slide