Climbing Taiwan had a small batch of U bolts (staples) manufactured. They are a niche style of glue in anchor nowadays. They are a good option if theft of anchor hardware is a possibility or if tensile-loading is primarily expected.

Specifications: 

• 316 stainless steel 8mm rod
• Rated to 30kN
• 92g
• Requires 10mm holes
• Minimum 80mm embedment
• Has rolled threads and is passivated for extra corrosion resistance.

Climbing Taiwan's test results with Hilti RE100 Epoxy:

• Tension: 67.34kN
• Shear: 69.78kN