Brass Adapter size

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{"cid":"136935","pid":"24032861","pimg_url":"\/\/img1.b2bforus.com\/18\/2b\/b91cc0b85d07\/product\/82899672_s-w400xh400.jpg","name":"(8.1Q-3) Â ± Factory sale quick connect 10% Q=flow various within 20mm copper flow sensor","attrs":{"Price":"$6.25(1 - 499 Pieces) $6.09(500 - 999 Pieces) $5.94(1000 - 4999 Pieces) $5.78(>=5000 Pieces)","MOQ":"1 Piece","Delivery Time":"Negotiable","Brand":"PONAI"}}

{"cid":"136935","pid":"24032849","pimg_url":"\/\/img1.b2bforus.com\/18\/2b\/b91cc0b85d07\/product\/82899610_s-w400xh400.jpg","name":"F= (7Q-3) Â ± 10% Q=flow 6 minutes 1 inch Water Flow Sensor Cooling System Flow Probe Circulation System Flow Meters","attrs":{"Price":"$7.97(1 - 499 Pieces) $7.81(500 - 999 Pieces) $7.66(1000 - 4999 Pieces) $7.50(>=5000 Pieces)","MOQ":"1 Piece","Delivery Time":"Negotiable","Brand":"PONAI"}}

{"cid":"136935","pid":"24032832","pimg_url":"\/\/img1.b2bforus.com\/18\/2b\/b91cc0b85d07\/product\/82899547_s-w400xh400.jpg","name":"F= (7Q-3) Â ± Widely Used 10% Q=flow Special Design G3\/4 G1 Wire G1 Wire Copper External Internal Cooling System Flow Sensor","attrs":{"Price":"$7.81(1 - 499 Pieces) $7.66(500 - 999 Pieces) $7.50(1000 - 4999 Pieces) $7.34(>=5000 Pieces)","MOQ":"1 Piece","Delivery Time":"Negotiable","Brand":"PONAI"}}

{"cid":"136935","pid":"24032818","pimg_url":"\/\/img1.b2bforus.com\/18\/2b\/b91cc0b85d07\/product\/82899484_s-w400xh400.jpg","name":"F=8.1Q-3Â ± 10% Q=flow 6 Points\/4 Points External Double Tooth Flow Meter Water Heater and Wall-hung Boiler Accessories Flow Sensor","attrs":{"Price":"$6.25(1 - 499 Pieces) $6.09(500 - 999 Pieces) $5.94(1000 - 4999 Pieces) $5.78(>=5000 Pieces)","MOQ":"1 Piece","Delivery Time":"Negotiable","Brand":"PONAI"}}