Wedge Anchor, System of Measurement Inch, Anchor Diameter 3/8 in, Thread Size 3/8 In.-16, Overall Length 2 1/4 in, Thread Length 1 3/16 in, Eyelet Hole Size Not Applicable, Material Steel, Material Grade/Class Grade 2, Finish Zinc Plated, Compatible Material Concrete, Drill Bit Size 3/8 in, Minimum Installation Depth 1 5/8 in, Minimum Material Thickness 4 in, Ultimate Shear Strength (4,000 psi Concrete) 3,151 lb, Ultimate Tension Strength (4,000 psi Concrete) 2,367 lb, Nut Width 0.5625 in
You've found the MySpex style # 18 P. The 'P' stands for Pantos, or Pillow-shape. It's a slightly rounded rectangled shape front, very similar to the 18O (oval) style, but the corners are more squared, thus the Pantos name. This is the second best selling MySpex, second only to the classic 18 Oval style. The lens is fully rimmed and has an adjustable smooth metal nose pad and is available in these four popular color choices: Black, Pewter,, Platinum and Rust in the strengths from +1.0 to +2.5. These are premium optical-quality reading glasses and are foldable and fit comfortably in the included egg shaped case. Here's the optical sizing scoop: Lens: 40mm, Bridge: 26mm, Temple: 135mm