1、1. The holder body made of aluminum alloy, durable; hot shoe made of ABS material to reduce the wear and tear; 2、2. The hot shoe mount can be adjusted between 16-20mm, suitable for Nikon Speedlight SB910/SB900/SB800/SB700/SB600, Canon 600EX-RT/580EX II/580EX/550EX/430EX II/430EX, etc., except for Sony / Minolta flash units; 3、3. With umbrella hole adjusted by a metal screw, accept all reflective or soft umbrellas of the shaft diameter less than 9.9mm; 4、4. Damping by the thread occlusion design, both combining closer, bearing more, and convenient maintenance, low failure rate; 5、5. The bottom hole diameter is about 15.8mm, accepting 5/8” light stand, including light stand Features: 1. The holder body made of aluminum alloy, durable; hot shoe made of ABS material to reduce the wear and tear; 2. The hot shoe mount can be adjusted between 16-20mm, suitable for Nikon Speedlight SB910/SB900/SB800/SB700/SB600, Canon 600EX-RT/580EX II/580EX/550EX/430EX II/430EX, etc., except for Sony / Minolta flash units 3. With umbrella hole adjusted by a metal screw, accept all reflective or soft umbrellas of the shaft diameter less than 9.9mm 4. Damping by the thread occlusion design, both combining closer, bearing more, and convenient maintenance, low failure rate 5. The bottom hole diameter is about 15.8mm, accepting 5/8'' light stand, including light stand 6. With a 1/4'' to 3/ 8'' female thread adapter screw, respectively support 1/4'' and 3/8'' screws, compatible with 1/4'' or 3/8'' tripod ball heads. this adapter don't fit for Sony and Minolta flash Specifications: Adjustable Hot Shoe Mount:16-22mm Umbrella Hole Diameter: 9.9mm Bottom Hole Diameter: 15.8mm (5/8'') Vertical Load: 3kg Product Weight: 150g Package include: 1*E Type Light Stand