RO Mini Spanner Wrench/Membrane Housing Key Suited for Opening of RO Membrane Housing – 1 Pcs..Ideal for Opening of the Inline RO Membrane Housing during Membrane Change.- Opening of the RO Membrane Housing is very difficult after soaking of the Membrane in the Water and lot of force is required with the Hand.Hence recommended to use the Plastic Spanner Wrench to make the Membrane Filter Change Easier.(Please note this Spanner is not suitable for RO Outer Spun Filter Housing.To be used for inside membrane Change)- This Universal Mini Imported Spanner/Wrench is Suitable for all the 50 to 100 GPD Membrane Housing-Suited for common RO water filter Purifiers available in India,Compatible with many RO Brands and Models-Can be used in multiple water purifier ModelsCounter Top,Desk Top,Stand Mounted,Wall Hanging,Under Sink,most of the RO Model cabinets.- Specification. Material – Imported Plastic. Color – Black. Size:18CmX9cmX2cm(LXWXH),Internal Dia: 8 Cm, Wrench Teeth to Teeth Dia:7.5Cm…………. Suitable for 50 GPD TO 100 GPD Standard Membrane RO Housing Unit. Use of Plastic Spanner Wrench recommended for faster opening and to avoid damage to expensive Housing Unit