4 Pcs/pack Pin to Snap Connect Adapters Tens Lead Wire Adapters - 2mm Pin to 3.5mm & 3.9mm Snap Connector

Seems to work well... I have had no issues with them.

Good quality

Connection to wire came loose and doesn’t fit tight and came out second time using. Tried to reinstall wire 🥴Glad product was only a few dollar's, but I still need a good replacement

Very tight fit almost thought they were for smaller pin but got them on with a little twisting. I like the tight fit as I intend to convert my leads permanently but this would be the best if you want to switch back and forth. I find snap pads much easier to use quick snap with one hand instead of using two hands to push in lead pin. I really like that these are color code as the leads I converted just had a small + or - on each of and I had to look closely to tell the difference. These work great with the discount tens snap pads I ordered the from Amazon https://www.amazon.com/dp/B07NBM9GCN/ref=cm_sw_r_cp_awdb_t1_F.4qDbPTSNYCP

works great.

Great addition to your cables to have the option of using a broader range of electrodes, including disposable

Didn't fit. But easy and fast return

They're functonal