To be used in combination with the MagClip 100 to create a solid point for an Astera tube (or similar 1.7” (43mm) diameter fixture) when clamping onto or screwing into a surface isn't an option. Place the MagClip 100 on one side of a surface and the MagBlock 100 on the other. Includes a 1/4" UNC eyebolt for a point of attachment, or insert another similarly sized hardware. PETG-CF (Carbon Fiber) option available for improved strength and higher temperature rating. SPECIFICATIONS Body 3D printed with PETG. A quality plastic material with great strength and flexibility. Rated up to 170°F (77°C). Carbon Fiber option: rated up to 266°F (130°C). Boot 3D printed with TPU. A quality plastic material with a flexibility comparable to rubber. Rated up to 221°F (105°C). DIMENSIONS 4.05" x 1.29" x .79" 103x33x20mm) WEIGHT 6.2 oz (176g) MAGNET N52 Neodymium Approximate pull force ::: 93 lbs (42 kg).